aluminized the mirror of the largest single-mirror telescope in North America. Technicians at the MMT Observatory on Mount Hopkins bolted a vacuum chamber directly over the 6.5-meter (21.5 – foot) ...

Maybe you have had a casual interest in astronomy for years, looking up at the night sky every chance you get. Or maybe you’ve just recently become interested in the wonders hanging high above our ...

For most of us who are not astronomers, the image that comes to mind when describing a reflecting telescope is of a huge instrument in its own domed-roof building on a mountain top. But a reflecting ...